Print Quality - Samsung SCX 6322DN - B/W Laser - All-in-One Service Manual

6.2.3 Print Quality

Error Status
Vertical black line and 1. Bad blade of Toner cartridge
band
2. LSU
3. Bad cleaning blade of drum cartridge.
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Vertical white line 1. LSU window contamination
2. Toner cartridge
Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
No image 1. GND OPC is well grounded?
Digital Printer
Digital Printer
2. LSU running well?
Digital Printer
3. Biss voltage is normal?
Digital Printer
4. Lower toner?
Digital Printer
5. Is there video data from Main PBA
Light image 1. LSU light power normal?
Digital Printer 2. Enough toner?
3. High charger voltage?
Digital Printer
4. Lower bias voltage
Digital Printer
5. Contamination of high voltage contact.
Digital Printer
Digital Printer
6. Transfer volatge and roller.
Samsung Electronics
Check Solution
1. Change Toner cartridge
2. Replace LSU
3. Replace drum cartridge.
1. Clean LSU window
2. If not LSU, change Toner cartridge.
1. Measure the resistance between frame
ground and the ground spring attached frame.
Confirm stable ground. Unless bad ground,
detach cabinet, check where is bad point
2.Adjust LSU or replace it
3. Normal Dev bias = -450V
4. Shake toner cartridge and print.If a like
good, toner is empty
5. Test engine test pattern , replace Main PBA
1. LSU light power check is difficult.
Compare with new one and check.
2. Check toner and the toner cartridge counter
3~4. Measure all high voltage output.
5. Leakage toner cause bad contact and
increase contact resistance. Clean contami-
nated area.
Troubleshooting
Service Manual
6-5